Medical retrieval device
First Claim
1. A medical device, comprising:
- a proximal handle;
a sheath extending from the handle to a distal end of the sheath, the sheath including a lumen extending therethrough; and
a basket comprising at least three legs, said basket having a collapsed position in which the basket is collapsed within the lumen of the sheath and an expanded position in which the basket is located beyond the distal end of the sheath, the basket comprising a proximal portion comprising a length, a distal portion comprising a length, and an intermediate portion extending between the proximal and distal portions, the intermediate portion comprising a length that is greater than the length of each of said proximal portion and said distal portion, said at least three legs in the intermediate portion being spirally arranged, substantially parallel, and non-intersecting, said intermediate portion having a uniform diameter throughout its length when the basket is in the expanded position.
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Accused Products
Abstract
Immobilization and/or retrieval of material from a body can be accomplished, in accordance with the invention, with a device that includes a sheath and a basket. The basket is movable relative to the sheath from a retracted position in which the basket is withdrawn within the sheath and an expanded position in which the basket is extended beyond the distal end of the sheath and open. The basket has a first portion and a second portion with two or more legs extending from the first portion to the second portion. The basket further includes an intermediate portion between the first and second portions in which the legs are spirally arranged, substantially parallel, and non-intersecting. The intermediate portion of the basket is displaced radially outward relative to the first and second portions when the basket is in the expanded position. The basket in the expanded position may be used to immobilize and/or capture material within a body.
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Citations
17 Claims
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1. A medical device, comprising:
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a proximal handle;
a sheath extending from the handle to a distal end of the sheath, the sheath including a lumen extending therethrough; and
a basket comprising at least three legs, said basket having a collapsed position in which the basket is collapsed within the lumen of the sheath and an expanded position in which the basket is located beyond the distal end of the sheath, the basket comprising a proximal portion comprising a length, a distal portion comprising a length, and an intermediate portion extending between the proximal and distal portions, the intermediate portion comprising a length that is greater than the length of each of said proximal portion and said distal portion, said at least three legs in the intermediate portion being spirally arranged, substantially parallel, and non-intersecting, said intermediate portion having a uniform diameter throughout its length when the basket is in the expanded position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for retrieving material from a body, comprising:
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inserting a medical device comprising;
a proximal handle, a sheath extending from the handle to a distal end of the sheath, the sheath including a lumen extending therethrough; and
a basket comprising at least three legs, said basket having a collapsed position in which the basket is collapsed within the lumen of the sheath and an expanded position in which the basket is located beyond the distal end of the sheath, the basket comprising a proximal portion comprising a length, a distal portion comprising a length, and an intermediate portion extending between the proximal and distal portions, the intermediate portion comprising a length that is greater than the length of each of said proximal portion and said distal portion, said at least three legs in the intermediate portion being spirally arranged, substantially parallel, and non-intersecting, said intermediate portion having a uniform diameter throughout its length when the basket is in the expanded position;
maneuvering the basket around said material in a body;
capturing said material in the basket; and
removing the basket from the body. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification